KR0172899B1 - Tcp structure - Google Patents
Tcp structure Download PDFInfo
- Publication number
- KR0172899B1 KR0172899B1 KR1019950023864A KR19950023864A KR0172899B1 KR 0172899 B1 KR0172899 B1 KR 0172899B1 KR 1019950023864 A KR1019950023864 A KR 1019950023864A KR 19950023864 A KR19950023864 A KR 19950023864A KR 0172899 B1 KR0172899 B1 KR 0172899B1
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- South Korea
- Prior art keywords
- tcp
- pcb
- pad
- bonding
- present
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10621—Components characterised by their electrical contacts
- H05K2201/10681—Tape Carrier Package [TCP]; Flexible sheet connector
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Liquid Crystal (AREA)
Abstract
본 발명은 TCP구조에 관한 것으로, TCP와 PCB가 본딩되는 부분의 TCP패드의 단선을 방지하기 위한 것이다.The present invention relates to a TCP structure, to prevent the disconnection of the TCP pad of the portion where the TCP and PCB are bonded.
본 발명은 PCB와의 본딩을 위한 패드부 영역의 TCP필름에 개구부가 다수개 형성된 TCP구조를 제공한다.The present invention provides a TCP structure in which a plurality of openings are formed in a TCP film of a pad portion region for bonding with a PCB.
Description
제1도는 종래의 TCP를 이용한 액정표시장치의 실장구조도.1 is a structure diagram of a liquid crystal display device using a conventional TCP.
제2도는 종래의 TCP구조도.2 is a conventional TCP structure diagram.
제3도는 본 발명의 일실시예에 의한 TCP구조도.3 is a TCP structural diagram according to an embodiment of the present invention.
제4도는 본 발명의 다른 실시예에 의한 TCP구조도.4 is a TCP structure diagram according to another embodiment of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
3 : TCP필름 4 : 구동 IC칩3: TCP film 4: Driving IC chip
5 : PCB 7 : PCB와의 본딩을 위한 TCP패드부5: PCB 7: TCP pad part for bonding with PCB
8 : LCD패널부와의 접속을 위한 TCP패드부 20 : 개구부8: TCP pad part for connection with LCD panel part 20: opening part
본 발명은 TCP구조에 관한 것으로, 특히 TAB(Tape Automated Bonding)방식 실장구조인 TCP(Tape Carrier Package)구조에 관한 것이다.The present invention relates to a TCP structure, and more particularly, to a Tape Carrier Package (TCP) structure which is a Tape Automated Bonding (TAB) mounting structure.
액정표시장치의 실장기술이란 TFT-LCD(Thin Film Transistor-Liquid Crystal Display)를 구동하기 위한 구동신호를 공급하는 구동 IC를 TFT-LCD패널에 접속하는 기술이다. 이와 같은 TFT-LCD의 실장방식에는 Au와이어로 패널전극과 구동 IC를 접속하는 WB(Wire Bonding)방식, 필름 캐리어(film carrier)에 구동 IC가 접속된 패키지를 패널에 실장하는 TAB방식, 베어칩(bare chip)자체에 범프(bump)를 형성한 후 금속배선이 형성된 패널에 실장하는 COG(Chip on Glass)방식 등이 있다.The technology for mounting a liquid crystal display device is a technology for connecting a driving IC for supplying a driving signal for driving a thin film transistor-liquid crystal display (TFT-LCD) to a TFT-LCD panel. The TFT-LCD mounting method includes Au wire, a WB (Wire Bonding) method for connecting the panel electrode and the driving IC, a TAB method for mounting a package in which a driver IC is connected to the film carrier, and a bare chip. There is a chip on glass (COG) method in which a bump is formed on a bare chip and then mounted on a panel on which metal wiring is formed.
상기 실장 방식중 TCP를 이용한 TAB실장방식을 제1도를 참조하여 설명하면 다음과 같다.The TAB mounting method using TCP among the mounting methods will be described with reference to FIG. 1 as follows.
구동 IC칩(4)이 접속된 TCP필름(10)의 패드부(7)와 PCB(5)를 납땜(soldering)방법을 이용하여 본딩하고, 이와 같이 PCB(5)에 접속된 TCP를 LCD패널 하부기판(1)의 패널전극부에 ACF(Anisotropic Conductivity Film; 이방성 도전성 접착제)(6)를 이용하여 본딩함으로써 구동 IC를 TFT-LCD패널에 접속한다.The pad 7 and the PCB 5 of the TCP film 10 to which the driving IC chip 4 is connected are bonded by soldering, and the TCP connected to the PCB 5 is thus bonded to the LCD panel. The driving IC is connected to the TFT-LCD panel by bonding using an ACF (Anisotropic Conductivity Film) 6 to the panel electrode portion of the lower substrate 1.
제2도는 종래의 일반적인 TCP구조를 도시한 평면도로서, TCP는 폴리이미드필름(10)으로 이루어지며, PCB와의 본딩을 위한 TCP패드부(7)가 일단에 위치하고 LCD패널부와의 접속을 위한 TCP패드부(8)가 다른 일단에 위치하며 중앙부분(9)에 절연층을 개재하여 구동 IC칩(4)이 접속된 구조로 되어 있다.2 is a plan view showing a conventional general TCP structure, TCP is made of a polyimide film 10, the TCP pad portion 7 for bonding with the PCB is located at one end TCP for connection to the LCD panel portion The pad part 8 is located at the other end, and the drive IC chip 4 is connected to the center part 9 via the insulating layer.
상기 PCB와의 본딩을 위한 TCP패드부(7)부분에는 PCB와 패드부를 납땜하여 접속시키기 위해 길게 개구부(20)가 형성되어 있는데, 이 개구부(20)로 인해 TCP필름이 안정적이지 못하고 불안정하게 놓여질 수 있기 때문에 그 취약부분에서 18-15㎛두께의 Cr으로 구성되어 두께가 매우 얇은 패드부(7)가 단선되는 문제가 발생한다.The TCP pad part 7 for bonding with the PCB is formed with an opening 20 for soldering the PCB and the pad part, and the opening 20 may be unstable and unstable. As a result, a problem occurs in that the pad portion 7, which is made of Cr having an thickness of 18-15 µm in the weak part, is disconnected.
본 발명은 이와 같은 문제를 해결하기 위한 것으로, TCP와 PCB가 본딩되는 부분의 TCP패드의 단선을 방지할 수 있는 TCP구조를 제공하는데 그 목적이 있다.The present invention has been made to solve such a problem, and an object thereof is to provide a TCP structure that can prevent disconnection of a TCP pad at a portion where TCP and a PCB are bonded.
상기 목적을 달성하기 위한 본 발명의 TCP구조는 PCB와의 본딩을 위한 패드부 영역의 TCP필름에 개구부가 다수개 형성된 것을 특징으로 한다.TCP structure of the present invention for achieving the above object is characterized in that a plurality of openings formed in the TCP film of the pad portion area for bonding with the PCB.
이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.
제3도에 본 발명 제1실시예에 의한 TCP구조를 평면도로 나타내었다.3 shows a TCP structure according to the first embodiment of the present invention in a plan view.
본 발명에 의한 TCP는 PCB와의 본딩을 위한 TCP패드부(7)가 일단에 위치하고 LCD채널부와의 접속을 위한 TCP패드부(8)가 다른 일단에 위치하며 중앙부분(9)에 절연층을 개재하여 구동 IC칩(4)이 접속된 구조로 되어 있는바, 상기 TCP패드부(7)의 TCP필름(3)부위에는 상기 TCP패드부(7)의 각각의 패드마다 PCB와의 본딩을 위한 개구부(20)가 형성되어 있다. 즉, 상기한 종래기술에서와 같이 PCB와의 본딩을 위한 개구부가 TCP패드부(7) 전체에 걸쳐 하나로 길게 형성된 것과는 달리 PCB와 본딩되는 각각의 패드 부위에는 개구부가 형성되고, 패드와 패드사이에 필름이 남아 있는 구조로 되어 있다. 따라서 TCP필름(3)이 매우 안정적으로 놓이게 되므로 상기한 종래 기술에서와 같이 패드가 단선되는 일은 일어나지 않게 된다.In the TCP according to the present invention, the TCP pad part 7 for bonding with the PCB is located at one end, and the TCP pad part 8 for connection with the LCD channel part is located at the other end. The driving IC chip 4 is connected to each other. An opening for bonding the PCB to each of the pads of the TCP pad part 7 is provided in the TCP film part 3 of the TCP pad part 7. 20 is formed. That is, as in the above-described conventional art, unlike the openings for bonding with the PCB, the openings are formed in each pad portion to be bonded to the PCB, unlike the openings formed in one throughout the TCP pad portion 7, and the film between the pads and the pads. This structure is left. Accordingly, since the TCP film 3 is placed very stably, the pad is not disconnected as in the conventional art.
제4도는 본 발명의 제2실시예에 의한 TCP구조를 도시한 것으로, PCB와패드부의 본딩을 위한 개구부(20)가 2개의 TCP패드부(7)마다 하나씩 형성되어 있다.4 shows a TCP structure according to the second embodiment of the present invention, in which one opening 20 for bonding the PCB and the pad portion is formed for each of the two TCP pad portions 7.
이 경우에도 종래보다 TCP필름이 안정되게 놓일 수 있으므로 패드의 단선을 방지할 수 있다.In this case, since the TCP film can be placed more stably than the conventional one, it is possible to prevent disconnection of the pad.
이상과 같이 상기 개구부를 종래와 같이 하나의 개구부를 형성하지 않고 다수개로 형성함으로써 패드의 단선을 방지할 수 있게 된다.As described above, disconnection of the pad can be prevented by forming a plurality of the openings without forming one opening as in the related art.
이와 같이 본 발명에 의하면, TCP와 PCB의 본딩을 안정되게 행할 수 있으며, 이에 따라 TFT-LCD제작시의 수율을 향상시킬 수 있게 된다.As described above, according to the present invention, the bonding between the TCP and the PCB can be performed stably, thereby improving the yield in manufacturing the TFT-LCD.
본 발명의 TCP구조는 액정표시장치의 실장뿐아니라 일반적인 반도체 소자의 실장에서 응용될 수 있다.The TCP structure of the present invention can be applied not only to the mounting of liquid crystal display devices but also to the mounting of general semiconductor devices.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950023864A KR0172899B1 (en) | 1995-08-02 | 1995-08-02 | Tcp structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950023864A KR0172899B1 (en) | 1995-08-02 | 1995-08-02 | Tcp structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970012956A KR970012956A (en) | 1997-03-29 |
| KR0172899B1 true KR0172899B1 (en) | 1999-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950023864A KR0172899B1 (en) | 1995-08-02 | 1995-08-02 | Tcp structure |
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| Country | Link |
|---|---|
| KR (1) | KR0172899B1 (en) |
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1995
- 1995-08-02 KR KR1019950023864A patent/KR0172899B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR970012956A (en) | 1997-03-29 |
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